Is it worth it beeing a goblin resto shaman anymore?

One of the reasons I race changed to goblin back in cataclysm was to lower my haste soft cap and be able to get more mastery while reforging out of haste but nowdays it seems like its completly a waste since you only need about 400 or so haste to reach the soft cap and its impossible to be close to it, im always at about 1k or so haste.

I remember that the orcs' blood fury didn't work for healing, has blizzard fixed this?

Min/maxing panda will give you the theoretical highest output for an extended duration. However I would argue a haste cooldown to be the most beneficial thing for a healer any day of the week. Healing is never a stagnant rotational activity, and there will always be periods of burst healing required, in which a haste cooldowns has a far greater advantage to your ability to keep your raid alive over a stagnant 300 intellect.